def _load_single_lang_dataset(self, split, epoch):
loaded_datasets = []
paths = self.args.data.split(':')
assert len(paths) > 0
data_path = paths[epoch % len(paths)]
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
path = os.path.join(data_path, split_k)
ds = data_utils.load_indexed_dataset(path, self.dictionary,
self.args.dataset_impl)
if ds is None:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(split, data_path))
# Since we append each block with the classification_token,
# we need to effectively create blocks of length
# tokens_per_sample-1
loaded_datasets.append(
TokenBlockDataset(
ds,
ds.sizes,
self.args.tokens_per_sample - 1,
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
))
print('| {} {} {} examples'.format(data_path, split_k,
len(loaded_datasets[-1])))
if len(loaded_datasets) == 1:
dataset = loaded_datasets[0]
sizes = dataset.sizes
else:
dataset = ConcatDataset(loaded_datasets)
sizes = np.concatenate([ds.sizes for ds in loaded_datasets])
return dataset, sizes
def from_tsv(cls, root: str, data_cfg: S2TDataConfig, splits: str,
tgt_dict, pre_tokenizer, bpe_tokenizer, is_train_split: bool,
epoch: int, seed: int, audio_dict) -> AudioDictDataset:
samples = []
_splits = splits.split(",")
for split in _splits:
tsv_path = op.join(root, f"{split}.tsv")
if not op.isfile(tsv_path):
raise FileNotFoundError(f"Dataset not found: {tsv_path}")
with open(tsv_path) as f:
reader = csv.DictReader(
f,
delimiter="\t",
quotechar=None,
doublequote=False,
lineterminator="\n",
quoting=csv.QUOTE_NONE,
)
samples.append([dict(e) for e in reader])
assert len(samples) > 0
datasets = [
cls._from_list(name, is_train_split, [s], data_cfg, tgt_dict,
pre_tokenizer, bpe_tokenizer, audio_dict)
for name, s in zip(_splits, samples)
]
if is_train_split and len(
_splits) > 1 and data_cfg.sampling_alpha != 1.0:
# temperature-based sampling
size_ratios = cls._get_size_ratios(_splits,
[len(s) for s in samples],
alpha=data_cfg.sampling_alpha)
datasets = [
ResamplingDataset(d,
size_ratio=r,
seed=seed,
epoch=epoch,
replace=(r >= 1.0))
for d, r in zip(datasets, size_ratios)
]
return ConcatDataset(datasets)
def from_tsv(
cls,
root: str,
cfg: S2TDataConfig,
splits: str,
tgt_dict,
pre_tokenizer,
bpe_tokenizer,
is_train_split: bool,
epoch: int,
seed: int,
n_frames_per_step: int = 1,
speaker_to_id=None,
) -> SpeechToTextDataset:
datasets = [
cls._from_tsv(
root,
cfg,
split,
tgt_dict,
is_train_split,
pre_tokenizer,
bpe_tokenizer,
n_frames_per_step,
speaker_to_id,
) for split in splits.split(",")
]
if is_train_split and len(datasets) > 1 and cfg.sampling_alpha != 1.0:
# temperature-based sampling
size_ratios = cls.get_size_ratios(datasets,
alpha=cfg.sampling_alpha)
datasets = [
ResamplingDataset(d,
size_ratio=r,
seed=seed,
epoch=epoch,
replace=(r >= 1.0))
for r, d in zip(size_ratios, datasets)
]
return ConcatDataset(datasets) if len(datasets) > 1 else datasets[0]
def load_dataset(self, split, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
if self.args.dataset_from_json:
raise NotImplementedError
datasets = []
for path in self.paths:
try:
ds = get_datasets_from_indexed_filterbanks(
path,
self.args.target_lang,
self.tgt_dict,
split,
self.args.dataset_impl,
self.args.skip_normalization,
self.args.legacy_audio_fix_lua_indexing)
if self.training:
if self.args.context_type == 'src':
context_ds = FilterBanksDataset(
os.path.join(path, split) + ".context.npz",
self.args.dataset_impl == "cached",
self.args.legacy_audio_fix_lua_indexing)
else:
context_ds = data_utils.load_indexed_dataset(
os.path.join(path, split) + ".context." + self.args.target_lang,
self.tgt_dict,
self.args.dataset_impl)
datasets.append(ContextAwareDataset(
ds, context_ds, self.tgt_dict, self.args.context_type == 'src'))
else:
datasets.append(ds)
except Exception:
logger.warning("Split {} not found in {}. Skipping...".format(split, path))
assert len(datasets) > 0
if len(datasets) > 1:
self.datasets[split] = ConcatDataset(datasets)
else:
self.datasets[split] = datasets[0]
def load_dataset(lang,
lang_dict,
prefix,
dataset_length,
sample_ratios=None):
"""
Function to load additional dataset and deal with all parameters.
Easier than copying redudant code for each dataset.
Requires src_dataset to provide the length and sample_ratios.
"""
lang_datasets = []
lang_dataset = data_utils.load_indexed_dataset(prefix + lang,
lang_dict, dataset_impl)
if lang_dataset is not None:
lang_datasets.append(lang_dataset)
assert dataset_length == len(lang_datasets) or len(lang_datasets) == 0
if dataset_length == 1:
lang_dataset = lang_datasets[0] if len(lang_datasets) > 0 else None
else:
assert sample_ratios is not None
if len(lang_datasets) > 0:
lang_dataset = ConcatDataset(lang_datasets, sample_ratios)
else:
lang_dataset = None
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
lang_dict, "bos_index")
if lang_dataset is not None:
lang_dataset = PrependTokenDataset(lang_dataset,
lang_dict.bos())
eos = None
if append_source_id:
if lang_dataset is not None:
lang_dataset = AppendTokenDataset(
lang_dataset, lang_dict.index('[{}]'.format(lang)))
lang_dataset_sizes = lang_dataset.sizes if lang_dataset is not None else None
return lang_dataset, lang_dataset_sizes
def __load_dataset(self, split, lang_pair):
src, tgt = lang_pair.split('-')
datasets = []
for path in self.paths:
try:
ds = get_datasets_from_indexed_filterbanks(
path, tgt, self.dicts[tgt], split, self.args.dataset_impl,
self.args.skip_normalization,
self.args.legacy_audio_fix_lua_indexing)
datasets.append(ds)
except Exception:
logger.warning("Split {} not found in {}. Skipping...".format(
split, path))
assert len(datasets) > 0
if len(datasets) > 1:
dataset = ConcatDataset(datasets)
else:
dataset = datasets[0]
return self.alter_dataset_langtok(dataset,
src_eos=None,
src_lang=src,
tgt_eos=self.dicts[tgt].eos(),
tgt_lang=tgt)
def load_dataset(self, split, combine=False):
"""
Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
loaded_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
path = os.path.join(self.args.data, split_k)
if self.args.raw_text and IndexedRawTextDataset.exists(path):
ds = IndexedRawTextDataset(path, self.dictionary)
elif not self.args.raw_text and IndexedDataset.exists(path):
if self.args.lazy_load:
ds = IndexedDataset(path, fix_lua_indexing=True)
else:
ds = IndexedCachedDataset(path, fix_lua_indexing=True)
else:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(
split, self.args.data))
with data_utils.numpy_seed(self.seed + k):
loaded_datasets.append(
BlockPairDataset(
ds,
self.dictionary,
ds.sizes,
self.args.tokens_per_sample,
break_mode=self.args.break_mode,
))
logger.info('{} {} {} examples'.format(self.args.data, split_k,
len(loaded_datasets[-1])))
if not combine:
break
if len(loaded_datasets) == 1:
dataset = loaded_datasets[0]
sizes = dataset.sizes
else:
dataset = ConcatDataset(loaded_datasets)
sizes = np.concatenate([ds.sizes for ds in loaded_datasets])
self.datasets[split] = MaskedLMDataset(
dataset=dataset,
sizes=sizes,
vocab=self.dictionary,
pad_idx=self.dictionary.pad(),
mask_idx=self.dictionary.mask(),
classif_token_idx=self.dictionary.cls(),
sep_token_idx=self.dictionary.sep(),
shuffle=False,
seed=self.seed,
)
def load_dataset(self, split, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
paths = self.args.data.split(":")
assert len(paths) > 0
data_path = paths[(epoch - 1) % len(paths)]
split_path = os.path.join(data_path, split)
if self.langs is None:
languages = sorted(
[
name
for name in os.listdir(data_path)
if os.path.isdir(os.path.join(data_path, name))
]
)
else:
languages = self.langs.split(",")
for name in languages:
p = os.path.join(data_path, name)
assert os.path.exists(p), "data not found: {}".format(p)
logger.info("Training on {0} languages: {1}".format(len(languages), languages))
logger.info(
"Language to id mapping: ", {lang: id for id, lang in enumerate(languages)}
)
mask_whole_words = get_whole_word_mask(self.args, self.dictionary)
language_without_segmentations = self.args.no_whole_word_mask_langs.split(",")
lang_datasets = []
for language in languages:
split_path = os.path.join(data_path, language, split)
dataset = data_utils.load_indexed_dataset(
split_path,
self.source_dictionary,
self.args.dataset_impl,
combine=combine,
)
if dataset is None:
raise FileNotFoundError(
"Dataset not found: {} ({})".format(split, split_path)
)
end_token = (
self.source_dictionary.index("[{}]".format(language))
if self.args.add_lang_token
else self.source_dictionary.eos()
)
# create continuous blocks of tokens
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
self.args.tokens_per_sample - 2, # one less for <s>
pad=self.source_dictionary.pad(),
eos=end_token,
break_mode=self.args.sample_break_mode,
)
logger.info("loaded {} blocks from: {}".format(len(dataset), split_path))
# prepend beginning-of-sentence token (<s>, equiv. to [CLS] in BERT)
dataset = PrependTokenDataset(dataset, self.source_dictionary.bos())
dataset = AppendTokenDataset(dataset, end_token)
lang_mask_whole_words = (
mask_whole_words
if language not in language_without_segmentations
else None
)
lang_dataset = DenoisingDataset(
dataset,
dataset.sizes,
self.dictionary,
self.mask_idx,
lang_mask_whole_words,
shuffle=self.args.shuffle_instance,
seed=self.seed,
args=self.args,
eos=None
if not self.args.add_lang_token
else self.source_dictionary.index("[{}]".format(language)),
)
lang_datasets.append(lang_dataset)
dataset_lengths = np.array(
[len(d) for d in lang_datasets],
dtype=float,
)
logger.info(
"loaded total {} blocks for all languages".format(
int(dataset_lengths.sum()),
)
)
if split == self.args.train_subset:
# For train subset, additionally up or down sample languages.
sample_probs = self._get_sample_prob(dataset_lengths)
logger.info(
"Sample probability by language: {}".format(
{
lang: "{0:.4f}".format(sample_probs[id])
for id, lang in enumerate(languages)
}
)
)
size_ratio = (sample_probs * dataset_lengths.sum()) / dataset_lengths
logger.info(
"Up/Down Sampling ratio by language: {}".format(
{
lang: "{0:.2f}".format(size_ratio[id])
for id, lang in enumerate(languages)
}
)
)
resampled_lang_datasets = [
ResamplingDataset(
lang_datasets[i],
size_ratio=size_ratio[i],
seed=self.args.seed,
epoch=epoch,
replace=size_ratio[i] >= 1.0,
)
for i, d in enumerate(lang_datasets)
]
dataset = ConcatDataset(
resampled_lang_datasets,
)
else:
dataset = ConcatDataset(lang_datasets)
lang_splits = [split]
for lang_id, lang_dataset in enumerate(lang_datasets):
split_name = split + "_" + languages[lang_id]
lang_splits.append(split_name)
self.datasets[split_name] = lang_dataset
if split in self.args.valid_subset:
self.args.valid_subset = self.args.valid_subset.replace(
split, ",".join(lang_splits)
)
with data_utils.numpy_seed(self.args.seed + epoch):
shuffle = np.random.permutation(len(dataset))
self.datasets[split] = SortDataset(
dataset,
sort_order=[
shuffle,
dataset.sizes,
],
)
def get_asr_dataset_from_json(
data_path,
split,
tgt_dict,
combine,
upsample_primary,
max_source_positions,
max_target_positions,
seed=1,
specaugment_config=None,
):
"""
Parse data json and create dataset.
See espresso/tools/asr_prep_json.py which pack json from raw files
Json example:
{
"011c0202": {
"feat": "fbank/raw_fbank_pitch_train_si284.1.ark:54819",
"token_text": "T H E <space> H O T E L",
"utt2num_frames": "693",
},
"011c0203": {
...
}
}
"""
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else "")
data_json_path = os.path.join(data_path, "{}.json".format(split_k))
if not os.path.isfile(data_json_path):
if k > 0:
break
else:
raise FileNotFoundError(
"Dataset not found: {}".format(data_json_path))
with open(data_json_path, "rb") as f:
loaded_json = json.load(f, object_pairs_hook=OrderedDict)
utt_ids, feats, token_text, utt2num_frames = [], [], [], []
for utt_id, val in loaded_json.items():
utt_ids.append(utt_id)
feats.append(val["feat"])
if "token_text" in val:
token_text.append(val["token_text"])
if "utt2num_frames" in val:
utt2num_frames.append(int(val["utt2num_frames"]))
assert len(utt2num_frames) == 0 or len(utt_ids) == len(utt2num_frames)
src_datasets.append(
FeatScpCachedDataset(
utt_ids,
feats,
utt2num_frames=utt2num_frames,
seed=seed,
specaugment_config=specaugment_config
if split == "train" else None,
ordered_prefetch=True,
))
if len(token_text) > 0:
assert len(utt_ids) == len(token_text)
assert tgt_dict is not None
tgt_datasets.append(AsrTextDataset(utt_ids, token_text, tgt_dict))
logger.info("{} {} examples".format(data_json_path,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
feat_dim = src_datasets[0].feat_dim
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
for i in range(1, len(src_datasets)):
assert feat_dim == src_datasets[i].feat_dim, \
"feature dimension does not match across multiple json files"
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return AsrDataset(
src_dataset,
src_dataset.sizes,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=False,
left_pad_target=False,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
)
def load_dataset(self, split, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
def split_exists(split, data_type, data_path):
filename = os.path.join(data_path, f'{split}.{data_type}')
assert not self.args.raw_text
exists = [
IndexedDataset.exists(
os.path.join(data_path, f'{split}.{data_type}.{k}'))
for k in DPTREE_KEYS
]
if all(exists):
return True
else:
print(f'Following modality not exists: {exists}')
return False
# def indexed_dataset(path, dictionary):
def indexed_dataset(path):
assert IndexedCachedDataset.exists(
path), f'IndexedCachedDataset.exists({path})'
return IndexedCachedDataset(path, fix_lua_indexing=True)
def dptree_indexed_dataset(path):
assert DPTreeIndexedCachedDataset.exists(
path), f'DPTreeIndexedCachedDataset.exists({path})'
return DPTreeIndexedCachedDataset(path, fix_lua_indexing=True)
src_datasets = []
tgt_datasets = []
src_datasets_dict = {k: [] for k in DPTREE_KEYS}
# data_paths = self.args.data
data_path = self.args.data
print(f'| split = {split}')
print(f'| self.args.data = {self.args.data}')
# singular data path
lang = self.args.source_lang
src, tgt = 'input', 'target'
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
if split_exists(split_k, src, data_path):
prefix = os.path.join(data_path, f'{split}.')
else:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(split, data_path))
# src_datasets.append(indexed_dataset(prefix + src))
for modality in src_datasets_dict.keys():
src_datasets_dict[modality].append(
dptree_indexed_dataset(f'{prefix}{src}.{modality}'))
tgt_datasets.append(indexed_dataset(prefix + tgt))
print('| {} {} {} examples'.format(data_path, split_k,
len(tgt_datasets[-1])))
if not combine:
break
assert len(src_datasets_dict[DPTREE_KEYS[0]]) == len(tgt_datasets)
if len(tgt_datasets) == 1:
# src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
src_dataset_dict = {k: v[0] for k, v in src_datasets_dict.items()}
tgt_dataset = tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = self.args.upsample_primary
# src_dataset = ConcatDataset(src_datasets, sample_ratios)
src_dataset_dict = {
k: ConcatDataset(v, sample_ratios)
for k, v in src_datasets_dict.items()
}
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
src_sizes = src_dataset_dict['nodes'].sizes.reshape(-1, 2).sum(-1)
# print(f'src_sizes::: {src_sizes}')
self.datasets[split] = NodeStackFromDPTreeSepMonoClassificationDataset(
# srcs, src_sizes, src_dict
src_dataset_dict,
src_sizes,
self.source_dictionary,
tgt_dataset,
left_pad_source=self.args.left_pad_source,
# left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
# max_target_positions=self.args.max_target_positions,
)
def load_dataset(self, split, combine=False, epoch=0):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(
data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
if self.args.raw_text and IndexedRawTextDataset.exists(filename):
return True
elif not self.args.raw_text and IndexedDataset.exists(filename):
return True
return False
def indexed_dataset(path, dictionary):
if self.args.raw_text:
return IndexedRawTextDataset(path, dictionary)
elif IndexedDataset.exists(path):
return IndexedCachedDataset(path, fix_lua_indexing=True)
return None
src_datasets = []
tgt_datasets = []
data_paths = self.args.data
for dk, data_path in enumerate(data_paths):
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
src, tgt = self.args.source_lang, self.args.target_lang
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0 or dk > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(
split, data_path))
src_datasets.append(
indexed_dataset(prefix + src, self.src_dict))
tgt_datasets.append(
indexed_dataset(prefix + tgt, self.tgt_dict))
print('| {} {} {} examples'.format(data_path, split_k,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = self.args.upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
if split == "train":
train = True
seed = None
elif split == "valid":
train = True
seed = 1
elif split == "test":
train = False
seed = 1
else:
raise Exception('No such split: ' + str(split))
self.datasets[split] = LanguagePairSelfDatasetMask(
src_dataset,
src_dataset.sizes,
self.src_dict,
tgt_dataset,
tgt_dataset.sizes,
self.tgt_dict,
left_pad_source=self.args.left_pad_source,
left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
max_target_positions=self.args.max_target_positions,
shuffle=False,
dynamic_length=self.args.dynamic_length,
mask_range=self.args.mask_range,
train=train,
seed=seed,
full_masking=self.args.full_masking,
dynamic_masking=self.args.dynamic_masking,
skip_eos=self.args.skip_eos,
)
def load_dataset(self, split, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(
data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
if self.args.raw_text and IndexedRawTextDataset.exists(filename):
return True
elif not self.args.raw_text and IndexedDataset.exists(filename):
return True
return False
def indexed_dataset(path,
dictionary,
copy_ext_dict=False,
src_dataset=None):
if self.args.raw_text:
return IndexedRawTextDataset(path,
dictionary,
copy_ext_dict=copy_ext_dict,
src_dataset=src_dataset)
elif IndexedDataset.exists(path):
if self.args.lazy_load:
return IndexedDataset(path, fix_lua_indexing=True)
else:
return IndexedCachedDataset(path, fix_lua_indexing=True)
return None
def indexed_label(path):
if IndexedRawLabelDataset.exists(path):
return IndexedRawLabelDataset(path)
else:
print('Label file not found: {}'.format(path))
return None
src_datasets = []
tgt_datasets = []
src_labels = []
tgt_labels = []
data_paths = self.args.data
# 如果有其它文件，请按照train1, train2等命名
for dk, data_path in enumerate(data_paths):
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
src, tgt = self.args.source_lang, self.args.target_lang
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0 or dk > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(
split, data_path))
src_dataset = indexed_dataset(prefix + src, self.src_dict,
self.args.copy_ext_dict)
tgt_dataset = indexed_dataset(prefix + tgt, self.tgt_dict,
self.args.copy_ext_dict,
src_dataset)
# src_dataset 包括 lines, sizes, tokens_list, words_list
src_datasets.append(src_dataset)
tgt_datasets.append(tgt_dataset)
#label的索引
label_prefix = os.path.join(data_path,
'{}.label.'.format(split_k))
src_label = indexed_label(label_prefix + src + '.txt')
tgt_label = indexed_label(label_prefix + tgt + '.txt')
src_labels.append(src_label)
tgt_labels.append(tgt_label)
print('| {} {} {} examples'.format(data_path, split_k,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
src_label, tgt_label = None, None
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
src_label, tgt_label = src_labels[0], tgt_labels[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = self.args.upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
#源数据和目标数据组成的数据集
self.datasets[split] = LanguagePairDataset(
src_dataset,
src_dataset.sizes,
self.src_dict,
src_label,
tgt_dataset,
tgt_dataset.sizes,
self.tgt_dict,
tgt_label,
left_pad_source=self.args.left_pad_source,
left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
max_target_positions=self.args.max_target_positions,
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=False,
load_alignments=False,
truncate_source=False,
append_source_id=False,
num_buckets=0,
shuffle=True,
pad_to_multiple=1,
add_lang_token=False,
):
def split_exists(split, src, tgt, lang, data_path):
logger.info(
os.path.join(data_path,
"{}.{}-{}.{}".format(split, src, tgt, lang)))
filename = os.path.join(data_path,
"{}.{}-{}.{}".format(split, src, tgt, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
def split_exists_self(split, src, data_path):
logger.info(
os.path.join(data_path, "{}.{}-{}.{}".format(split, src, src,
src)))
filename = os.path.join(data_path,
"{}.{}-{}.{}".format(split, src, src, src))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
def split_exists_valid(split, lang, data_path):
logger.info(os.path.join(data_path, "{}.{}".format(split, lang)))
filename = os.path.join(data_path, "{}.{}".format(split, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else "")
# print(split_k, src, tgt, src, data_path)
prefix_src = None
prefix_tgt = None
if not "-" in split_k:
# infer langcode
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(data_path,
"{}.{}-{}.".format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(data_path,
"{}.{}-{}.".format(split_k, tgt, src))
else:
if k > 0:
break
else:
raise FileNotFoundError(
"Dataset not found: {} ({}) {} {}".format(
split, data_path, src, tgt))
else:
# infer langcode
if split_exists_valid(split_k, src, data_path):
prefix = os.path.join(data_path, split_k + ".")
else:
if k > 0:
break
else:
raise FileNotFoundError(
"Dataset not found: {} ({}) ".format(split, data_path))
if prefix_src != None:
prefix = prefix_src
src_dataset = data_utils.load_indexed_dataset(prefix + src, src_dict,
dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
if prefix_tgt != None:
prefix = prefix_tgt
tgt_dataset = data_utils.load_indexed_dataset(prefix + tgt, tgt_dict,
dataset_impl)
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
logger.info("{} {} {}-{} {} examples".format(data_path, split_k,
src, tgt,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
logger.info("::::data sample_ratios:{}".format(sample_ratios))
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
src_dataset = AppendTokenDataset(src_dataset,
src_dict.index("[{}]".format(src)))
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(
tgt_dataset, tgt_dict.index("[{}]".format(tgt)))
eos = tgt_dict.index("[{}]".format(tgt))
eos = None
if add_lang_token:
src_dataset = PrependTokenDataset(src_dataset,
src_dict.index("[{}]".format(src)))
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(
tgt_dataset, tgt_dict.index("[{}]".format(tgt)))
align_dataset = None
if load_alignments:
align_path = os.path.join(data_path,
"{}.align.{}-{}".format(split, src, tgt))
if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
align_dataset = data_utils.load_indexed_dataset(
align_path, None, dataset_impl)
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return LanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
align_dataset=align_dataset,
eos=eos,
num_buckets=num_buckets,
shuffle=shuffle,
pad_to_multiple=pad_to_multiple,
)
def load_generation_pair_dataset(
data_path, split,
tgt,
src_dict,
tgt_dict,
combine, dataset_impl, upsample_primary,
left_pad_source, left_pad_target, max_source_positions,
max_target_positions, prepend_bos=False, load_alignments=False,
truncate_source=False, append_source_id=False, common_eos=None
):
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
if split_exists(split_k, "src", "tgt", "src", data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, "src", "tgt"))
elif split_exists(split_k, "tgt", "src", "src", data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, "tgt", "src"))
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(split, data_path))
src_dataset = data_utils.load_indexed_dataset(prefix + "src", src_dict, dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
tgt_dataset = data_utils.load_indexed_dataset(prefix + "tgt", tgt_dict, dataset_impl)
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
logger.info('{} {} {}-{} {} examples'.format(
data_path, split_k, "src", "tgt", len(src_datasets[-1])
))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
if common_eos is not None:
src_dataset = AppendTokenDataset(src_dataset, src_dict.index('[{}]'.format(common_eos)))
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(tgt_dataset, tgt_dict.index('[{}]'.format(common_eos)))
eos = tgt_dict.index('[{}]'.format(common_eos))
bos = tgt_dict.index('[{}]'.format(tgt))
align_dataset = None
if load_alignments:
align_path = os.path.join(data_path, '{}.align.{}-{}'.format(split, "src", "tgt"))
if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
align_dataset = data_utils.load_indexed_dataset(align_path, None, dataset_impl)
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return GenerationPairDataset(
src_dataset, src_dataset.sizes, src_dict,
tgt_dataset, tgt_dataset_sizes, tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=align_dataset, eos=eos, bos=bos
)
def pos_loader(data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
anchor,
anchor_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=False,
truncate_source=False,
append_source_id=False):
# Check the existence of the file
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(data_path,
'{}.{}-{}.{}'.format(split, src, tgt, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
anchor_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode (from a->b or from b->a)
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, data_path))
src_dataset = data_utils.load_indexed_dataset(prefix + src, src_dict,
dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
tgt_dataset = data_utils.load_indexed_dataset(prefix + tgt, tgt_dict,
dataset_impl)
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
anchor_prefix = os.path.join(data_path, anchor,
'{}.{}-{}.'.format(split_k, anchor, tgt))
anchor_dataset = data_utils.load_indexed_dataset(
anchor_prefix + anchor, anchor_dict, dataset_impl)
if anchor_dataset is not None:
anchor_datasets.append(anchor_dataset)
logger.info('{} {} {}-{} {} examples'.format(data_path, split_k,
src, tgt,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
# None is not avaliable for anchors
assert len(src_datasets) == len(anchor_datasets)
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
anchor_dataset = anchor_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
anchor_dataset = ConcatDataset(anchor_datasets, sample_ratios)
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
src_dataset = AppendTokenDataset(src_dataset,
src_dict.index('[{}]'.format(src)))
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(
tgt_dataset, tgt_dict.index('[{}]'.format(tgt)))
eos = tgt_dict.index('[{}]'.format(tgt))
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return POSGraphLanguagePairDatasetb(
src_dataset,
src_dataset.sizes,
src_dict,
anchor_dataset,
anchor_dataset.sizes,
anchor_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
eos=eos)
def load_dataset(self, split: str, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
languages, data_path = MultilingualLanguageModelingTask._get_langs(
self.args, epoch)
lang_to_offline_shard_ratio = None
if self.args.lang_to_offline_shard_ratio != "":
lang_to_offline_shard_ratio = {}
assert os.path.exists(
self.args.lang_to_offline_shard_ratio
), "provided offline shard ratio file doesn't exist: {0}".format(
self.args.lang_to_offline_shard_ratio)
with open(self.args.lang_to_offline_shard_ratio) as fin:
for line in fin:
lang, ratio = line.strip().split("\t")
ratio = float(ratio)
lang_to_offline_shard_ratio[lang] = ratio
logger.info(
"Found offline sharded ratio: %s",
lang_to_offline_shard_ratio,
)
if split == self.args.train_subset:
logger.info("Training on {0} languages: {1}".format(
len(languages), languages))
else:
logger.info("Evaluating on {0} languages: {1}".format(
len(languages), languages))
tokens_per_sample = self.args.tokens_per_sample - int(
self.args.add_bos_token)
fixed_pad_length = None
if self.args.pad_to_fixed_length:
fixed_pad_length = self.args.tokens_per_sample
pad_to_bsz = None
if self.args.pad_to_fixed_bsz:
pad_to_bsz = (self.args.batch_size_valid
if "valid" in split else self.args.batch_size)
lang_datasets = []
for lang_id, language in enumerate(languages):
split_path = os.path.join(data_path, language, split)
dataset = data_utils.load_indexed_dataset(split_path,
self.dictionary,
self.args.dataset_impl,
combine=combine)
# print('len(dataset) =', len(dataset))
if dataset is None:
raise FileNotFoundError("Dataset not found: {} ({})".format(
split, split_path))
dataset = maybe_shorten_dataset(
dataset,
split,
self.args.shorten_data_split_list,
self.args.shorten_method,
tokens_per_sample,
self.args.seed,
)
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
tokens_per_sample,
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
break_mode=self.args.sample_break_mode,
include_targets=True,
)
add_eos_for_other_targets = (
self.args.sample_break_mode is not None
and self.args.sample_break_mode != "none")
src_lang_idx, tgt_lang_idx = None, None
if self.args.add_bos_token:
src_lang_idx = self.dictionary.index(lang_token(language))
tgt_lang_idx = self.output_dictionary.index(
lang_token(language))
lang_datasets.append(
MonolingualDataset(
dataset=dataset,
sizes=dataset.sizes,
src_vocab=self.dictionary,
tgt_vocab=self.output_dictionary,
add_eos_for_other_targets=add_eos_for_other_targets,
shuffle=True,
targets=self.targets,
fixed_pad_length=fixed_pad_length,
pad_to_bsz=pad_to_bsz,
add_bos_token=self.args.add_bos_token,
src_lang_idx=src_lang_idx,
tgt_lang_idx=tgt_lang_idx,
))
dataset_lengths = np.array(
[len(d) for d in lang_datasets],
dtype=float,
)
logger.info("loaded total {} blocks for all languages".format(
dataset_lengths.sum(), ))
if split == self.args.train_subset:
dataset_lengths_ratio_multiplier = np.ones(len(dataset_lengths))
if lang_to_offline_shard_ratio is not None:
dataset_lengths_ratio_multiplier = []
for lang in languages:
assert (
lang in lang_to_offline_shard_ratio
), "Lang: {0} missing in offline shard ratio file: {1}".format(
lang,
self.args.lang_to_offline_shard_ratio,
)
dataset_lengths_ratio_multiplier.append(
lang_to_offline_shard_ratio[lang])
dataset_lengths_ratio_multiplier = np.array(
dataset_lengths_ratio_multiplier)
true_dataset_lengths = (dataset_lengths *
dataset_lengths_ratio_multiplier)
else:
true_dataset_lengths = dataset_lengths
# For train subset, additionally up or down sample languages.
sample_probs = self._get_sample_prob(true_dataset_lengths)
logger.info(
"Sample probability by language: %s",
{
lang: "{0:.4f}".format(sample_probs[id])
for id, lang in enumerate(languages)
},
)
size_ratio = (sample_probs *
true_dataset_lengths.sum()) / dataset_lengths
# TODO: add an option for shrinking all size ratios to below 1
# if self.args.multilang_sampling_alpha != 1:
# size_ratio /= size_ratio.max()
# Fix numeric errors in size ratio computation
# 0.999999999999999999 -> 1
# 1.000000000000000002 -> 1
for i in range(len(size_ratio)):
size_ratio[i] = round(size_ratio[i], 8)
logger.info(
"Up/Down Sampling ratio by language: %s",
{
lang: "{0:.2f}".format(size_ratio[id])
for id, lang in enumerate(languages)
},
)
logger.info(
"Actual dataset size by language: %s",
{
lang: "{0:.2f}".format(len(lang_datasets[id]))
for id, lang in enumerate(languages)
},
)
resampled_lang_datasets = [
ResamplingDataset(
lang_datasets[i],
size_ratio=size_ratio[i],
seed=self.args.seed,
epoch=epoch,
replace=size_ratio[i] > 1.0,
) for i, d in enumerate(lang_datasets)
]
logger.info(
"Resampled dataset size by language: %s",
{
lang: "{0:.2f}".format(len(resampled_lang_datasets[id]))
for id, lang in enumerate(languages)
},
)
dataset = ConcatDataset(resampled_lang_datasets)
else:
dataset = ConcatDataset(lang_datasets)
lang_splits = [split]
for lang_id, lang_dataset in enumerate(lang_datasets):
split_name = split + "_" + languages[lang_id]
lang_splits.append(split_name)
self.datasets[split_name] = lang_dataset
# [TODO]: This is hacky for now to print validation ppl for each
# language individually. Maybe need task API changes to allow it
# in more generic ways.
if split in self.args.valid_subset:
self.args.valid_subset = self.args.valid_subset.replace(
split, ",".join(lang_splits))
with data_utils.numpy_seed(self.args.seed + epoch):
shuffle = np.random.permutation(len(dataset))
self.datasets[split] = SortDataset(
dataset,
sort_order=[
shuffle,
dataset.sizes,
],
)
def load_langpair_dataset(
data_path, split,
src, src_dict,
tgt, tgt_dict,
combine, dataset_impl, upsample_primary,
left_pad_source, left_pad_target, max_source_positions,
max_target_positions, prepend_bos=False, load_alignments=False,
truncate_source=False, srcda=False, srcda_choice='uniform',
tgtda=False, tgtda_choice='uniform'
):
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(split, data_path))
src_dataset = data_utils.load_indexed_dataset(prefix + src, src_dict, dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
tgt_datasets.append(
data_utils.load_indexed_dataset(prefix + tgt, tgt_dict, dataset_impl)
)
print('| {} {} {}-{} {} examples'.format(data_path, split_k, src, tgt, len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
align_dataset = None
if load_alignments:
align_path = os.path.join(data_path, '{}.align.{}-{}'.format(split, src, tgt))
if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
align_dataset = data_utils.load_indexed_dataset(align_path, None, dataset_impl)
return LanguagePairDatasetDA(
src_dataset, src_dataset.sizes, src_dict,
tgt_dataset, tgt_dataset.sizes, tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=align_dataset,
srcda=srcda, srcda_choice=srcda_choice,
tgtda=tgtda, tgtda_choice=tgtda_choice
)
def load_dataset(self, split, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
paths = utils.split_paths(self.args.data)
assert len(paths) > 0
if self.args.multiple_datasets:
if len(paths) == 1:
paths = [
os.path.join(paths[0], p)
for p in next(os.walk(paths[0]))[1]
]
datasets = [
ShardedDataset(
self.dictionary,
self.args.dataset_impl,
path,
split,
epoch - 1,
combine=combine,
) for path in paths
]
ds_names = [ds.name for ds in datasets]
if split in self.subsample_splits:
sizes = [sum(d.sizes) for d in datasets]
min_sz = min(sizes)
ratios = [min_sz / sz for sz in sizes]
datasets = [
SubsampleDataset(d, r) if r < 1 else d
for d, r in zip(datasets, ratios)
]
dataset = ConcatDataset(datasets)
else:
data_path = paths[(epoch - 1) % len(paths)]
split_path = os.path.join(data_path, split)
dataset = data_utils.load_indexed_dataset(split_path,
self.dictionary,
self.args.dataset_impl,
combine=combine)
if dataset is None:
raise FileNotFoundError("Dataset not found: {} ({})".format(
split, split_path))
ds_names = [None]
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
self.args.tokens_per_sample,
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
break_mode=self.args.sample_break_mode,
include_targets=True,
)
if self.args.prepend_ds_name:
dataset = PrependDataset(
dataset,
prepend_getter=ds_name_getter(
offset=0,
generic_ds_name_chance=self.args.generic_ds_name_chance,
dictionary=self.dictionary,
),
ensure_first_token_is=self.dictionary.eos(),
)
dataset = ReplaceDataset(
dataset,
replace_map={
self.dictionary.eos(): self.dictionary.indices["\\n"]
},
offsets=[1, -1],
)
add_eos_for_other_targets = (self.args.sample_break_mode is not None
and self.args.sample_break_mode != "none")
dataset = MonolingualDataset(
dataset,
dataset.sizes,
self.dictionary,
self.output_dictionary,
add_eos_for_other_targets=add_eos_for_other_targets,
shuffle=True,
targets=self.targets,
add_bos_token=self.args.add_bos_token,
)
if self.args.colorize_ds_name:
ds_names.append("generic")
min_ds = min(self.dictionary.indices[n] for n in ds_names)
dataset = ColorizeDataset(
dataset,
color_getter=ds_name_getter(
offset=-min_ds,
generic_ds_name_chance=self.args.generic_ds_name_chance,
dictionary=self.dictionary,
),
)
self.datasets[split] = dataset
def load_dataset(self, split, epoch=0, combine=False, **kwargs):
"""Load a given dataset split (e.g., train, valid, test)."""
if self.cfg.data.endswith("1"):
data_shard = (epoch - 1) % self.cfg.num_data_splits + 1
data_path = self.cfg.data[:-1] + str(data_shard)
else:
data_path = self.cfg.data
def get_path(type, data_split):
return os.path.join(data_path, str(type), data_split)
def make_dataset(type, dictionary, data_split, combine):
split_path = get_path(type, data_split)
dataset = data_utils.load_indexed_dataset(
split_path,
dictionary,
combine=combine,
)
return dataset
def load_split(data_split, metric):
input_src = None
if self.cfg.include_src:
input_src = make_dataset("input_src",
self.dictionary,
data_split,
combine=False)
assert input_src is not None, "could not find dataset: {}".format(
get_path("input_src", data_split))
input_tgt = make_dataset("input_tgt",
self.dictionary,
data_split,
combine=False)
assert input_tgt is not None, "could not find dataset: {}".format(
get_path("input_tgt", data_split))
label_path = f"{get_path(metric, data_split)}.{metric}"
assert os.path.exists(
label_path), f"could not find dataset: {label_path}"
np_labels = np.loadtxt(label_path)
if self.cfg.target_metric == "ter":
np_labels = -np_labels
label = RawLabelDataset(np_labels)
return input_src, input_tgt, label
src_datasets = []
tgt_datasets = []
label_datasets = []
if split == self.cfg.train_subset:
for k in itertools.count():
split_k = "train" + (str(k) if k > 0 else "")
prefix = os.path.join(data_path, "input_tgt", split_k)
if not indexed_dataset.dataset_exists(prefix, impl=None):
if k > 0:
break
else:
raise FileNotFoundError(f"Dataset not found: {prefix}")
input_src, input_tgt, label = load_split(
split_k, self.cfg.target_metric)
src_datasets.append(input_src)
tgt_datasets.append(input_tgt)
label_datasets.append(label)
else:
input_src, input_tgt, label = load_split(split,
self.cfg.target_metric)
src_datasets.append(input_src)
tgt_datasets.append(input_tgt)
label_datasets.append(label)
if len(tgt_datasets) == 1:
input_tgt, label = tgt_datasets[0], label_datasets[0]
if self.cfg.include_src:
input_src = src_datasets[0]
else:
input_tgt = ConcatDataset(tgt_datasets)
label = ConcatDataset(label_datasets)
if self.cfg.include_src:
input_src = ConcatDataset(src_datasets)
input_tgt = TruncateDataset(input_tgt, self.cfg.max_positions)
if self.cfg.include_src:
input_src = PrependTokenDataset(input_src, self.dictionary.bos())
input_src = TruncateDataset(input_src, self.cfg.max_positions)
src_lengths = NumelDataset(input_src, reduce=False)
src_tokens = ConcatSentencesDataset(input_src, input_tgt)
else:
src_tokens = PrependTokenDataset(input_tgt, self.dictionary.bos())
src_lengths = NumelDataset(src_tokens, reduce=False)
dataset = {
"id": IdDataset(),
"net_input": {
"src_tokens":
RightPadDataset(
src_tokens,
pad_idx=self.source_dictionary.pad(),
),
"src_lengths":
src_lengths,
},
"nsentences": NumSamplesDataset(),
"ntokens": NumelDataset(src_tokens, reduce=True),
"target": label,
}
dataset = NestedDictionaryDataset(
dataset,
sizes=[src_tokens.sizes],
)
assert len(dataset) % self.cfg.mt_beam == 0, (
"dataset size (%d) is not a multiple of beam size (%d)" %
(len(dataset), self.cfg.mt_beam))
# no need to shuffle valid/test sets
if not self.cfg.no_shuffle and split == self.cfg.train_subset:
# need to keep all hypothese together
start_idx = np.arange(0, len(dataset), self.cfg.mt_beam)
with data_utils.numpy_seed(self.cfg.seed + epoch):
np.random.shuffle(start_idx)
idx = np.arange(0, self.cfg.mt_beam)
shuffle = np.tile(idx, (len(start_idx), 1)).reshape(-1) + np.tile(
start_idx, (self.cfg.mt_beam, 1)).transpose().reshape(-1)
dataset = SortDataset(
dataset,
sort_order=[shuffle],
)
logger.info(f"Loaded {split} with #samples: {len(dataset)}")
self.datasets[split] = dataset
return self.datasets[split]
def load_dataset(self, split, combine=False, **kwargs):
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
if self.args.raw_text and IndexedRawTextDataset.exists(filename):
return True
elif not self.args.raw_text and IndexedDataset.exists(filename):
return True
return False
def indexed_dataset(path, dictionary):
if self.args.raw_text:
raise NotImplementedError
elif IndexedDataset.exists(path):
return DPTreeIndexedCachedDataset(path, fix_lua_indexing=True)
return None
src_datasets_dict = {k: [] for k in NSTACK_KEYS}
tgt_datasets = []
data_paths = self.args.data
print(f'| split = {split}')
print(f'| self.args.data = {self.args.data}')
for dk, data_path in enumerate(data_paths):
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
src, tgt = self.args.source_lang, self.args.target_lang
if split_exists(split_k, src, tgt, tgt, data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, tgt, data_path):
prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0 or dk > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(split, data_path))
for modality in src_datasets_dict.keys():
src_datasets_dict[modality].append(indexed_dataset(f'{prefix}{src}.{modality}', self.src_dict))
# src_datasets.append(indexed_dataset(prefix + src, self.src_dict))
tgt_datasets.append(indexed_dataset(prefix + tgt, self.tgt_dict))
print('| {} {} {} examples'.format(data_path, split_k, len(tgt_datasets[-1])))
if not combine:
break
assert len(src_datasets_dict[NSTACK_KEYS[0]]) == len(tgt_datasets)
if len(tgt_datasets) == 1:
# src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
src_dataset_dict = {k: v[0] for k, v in src_datasets_dict.items()}
tgt_dataset = tgt_datasets[0]
else:
sample_ratios = [1] * len(tgt_datasets)
sample_ratios[0] = self.args.upsample_primary
# src_dataset = ConcatDataset(src_datasets, sample_ratios)
src_dataset_dict = {k: ConcatDataset(v, sample_ratios) for k, v in src_datasets_dict.items()}
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
# src_sizes = src_dataset_dict['nodes'].sizes
# src_sizes = src_dataset_dict['nodes'].sizes.reshape(-1, 2).sum(-1)
leave_shape = src_dataset_dict['leaves'].sizes.reshape(-1, 2)
node_shape = src_dataset_dict['nodes'].sizes.reshape(-1, 2)
# leaves_sizes = leave_shape.sum(-1)
# nodes_sizes = node_shape.sum(-1)
leaves_sizes = leave_shape.prod(-1)
nodes_sizes = node_shape.prod(-1)
# print(f'| FIXED VERSION, size must be prod(-1)')
src_sizes = leaves_sizes + nodes_sizes
src_nsents = leave_shape[:, 0]
# print(f'Some leave_size: {leave_shape[:10]}')
# print(f'Some src_nsent: ({src_nsents[:10]})')
self.datasets[split] = Nstack2SeqPairDataset(
src_dataset_dict, src_sizes, self.src_dict, src_nsents,
tgt_dataset, tgt_dataset.sizes, self.tgt_dict,
left_pad_source=self.args.left_pad_source,
left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
max_target_positions=self.args.max_target_positions,
remove_eos_from_source=self.args.remove_eos_from_source,
append_eos_to_target=self.args.append_eos_to_target,
input_feeding=self.args.input_feeding,
is_infer=self.args.infer_mode
)
def load_lang_dataset(
self,
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
max_source_positions,
prepend_bos=False,
load_alignments=False,
truncate_source=False,
):
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else "")
# infer langcode
if self.split_exists(split_k, src, tgt, src, data_path, dataset_impl):
prefix = os.path.join(data_path, "{}.{}-{}.".format(split_k, src, tgt))
elif self.split_exists(split_k, tgt, src, src, data_path, dataset_impl):
prefix = os.path.join(data_path, "{}.{}-{}.".format(split_k, tgt, src))
else:
if k > 0:
break
else:
logger.error(
f"Dataset not found: {data_path}, {split_k}, {src}, {tgt}"
)
raise FileNotFoundError(
"Dataset not found: {} ({})".format(split, data_path)
)
src_dataset = self.load_data(prefix + src, src_dict, dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
tgt_datasets.append(self.load_data(prefix + tgt, tgt_dict, dataset_impl))
logger.info(
"{} {} {}-{} {} examples".format(
data_path, split_k, src, tgt, len(src_datasets[-1])
)
)
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
align_dataset = None
if load_alignments:
align_path = os.path.join(
data_path, "{}.align.{}-{}".format(split, src, tgt)
)
if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
align_dataset = data_utils.load_indexed_dataset(
align_path, None, dataset_impl
)
return src_dataset, tgt_dataset, align_dataset
def get_asr_dataset_from_json(
data_path,
split,
tgt_dict,
combine,
upsample_primary=1,
num_buckets=0,
shuffle=True,
pad_to_multiple=1,
seed=1,
global_cmvn_stats_path=None,
specaugment_config=None,
):
"""
Parse data json and create dataset.
See espresso/tools/asr_prep_json.py which pack json from raw files
Json example:
{
"011c0202": {
"feat": "fbank/raw_fbank_pitch_train_si284.1.ark:54819" or
"wave": "/export/corpora5/LDC/LDC93S6B/11-1.1/wsj0/si_tr_s/011/011c0202.wv1" or
"command": "sph2pipe -f wav /export/corpora5/LDC/LDC93S6B/11-1.1/wsj0/si_tr_s/011/011c0202.wv1 |",
"text": "THE HOTEL",
"utt2num_frames": "693",
},
"011c0203": {
...
}
}
"""
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else "")
data_json_path = os.path.join(data_path, "{}.json".format(split_k))
if not os.path.isfile(data_json_path):
if k > 0:
break
else:
raise FileNotFoundError(
"Dataset not found: {}".format(data_json_path)
)
with open(data_json_path, "rb") as f:
loaded_json = json.load(f, object_pairs_hook=OrderedDict)
utt_ids, audios, texts, utt2num_frames = [], [], [], []
for utt_id, val in loaded_json.items():
utt_ids.append(utt_id)
if "feat" in val:
audio = val["feat"]
elif "wave" in val:
audio = val["wave"]
elif "command" in val:
audio = val["command"]
else:
raise KeyError(
f"'feat', 'wave' or 'command' should be present as a field for the entry {utt_id} in {data_json_path}"
)
audios.append(audio)
if "text" in val:
texts.append(val["text"])
if "utt2num_frames" in val:
utt2num_frames.append(int(val["utt2num_frames"]))
assert len(utt2num_frames) == 0 or len(utt_ids) == len(utt2num_frames)
if "feat" in next(iter(loaded_json.items())):
extra_kwargs = {}
else:
extra_kwargs = {"feat_dim": 80, "feature_type": "fbank"}
if global_cmvn_stats_path is not None:
feature_transforms_config = {
"transforms": ["global_cmvn"],
"global_cmvn": {"stats_npz_path": global_cmvn_stats_path}
}
extra_kwargs["feature_transforms_config"] = feature_transforms_config
src_datasets.append(AudioFeatDataset(
utt_ids, audios, utt2num_frames=utt2num_frames, seed=seed,
specaugment_config=specaugment_config if split == "train" else None,
**extra_kwargs
))
if len(texts) > 0:
assert len(utt_ids) == len(texts)
assert tgt_dict is not None
tgt_datasets.append(AsrTextDataset(utt_ids, texts, tgt_dict))
logger.info("{} {} examples".format(data_json_path, len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
feat_dim = src_datasets[0].feat_dim
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
for i in range(1, len(src_datasets)):
assert (
feat_dim == src_datasets[i].feat_dim
), "feature dimension does not match across multiple json files"
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return AsrDataset(
src_dataset,
src_dataset.sizes,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=False,
left_pad_target=False,
num_buckets=num_buckets,
shuffle=shuffle,
pad_to_multiple=pad_to_multiple,
)
def load_dataset(self, split, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
loaded_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
path = os.path.join(self.args.data, split_k)
if self.args.raw_text and IndexedRawTextDataset.exists(path):
ds = IndexedRawTextDataset(path, self.dictionary)
elif not self.args.raw_text and IndexedDataset.exists(path):
if self.args.lazy_load:
ds = IndexedDataset(path, fix_lua_indexing=True)
else:
ds = IndexedCachedDataset(path, fix_lua_indexing=True)
else:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(
split, self.args.data))
loaded_datasets.append(
TokenBlockDataset(
ds,
ds.sizes,
self.args.tokens_per_sample,
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
break_mode=self.args.sample_break_mode,
include_targets=True,
))
print('| {} {} {} examples'.format(self.args.data, split_k,
len(loaded_datasets[-1])))
if not combine:
break
if len(loaded_datasets) == 1:
dataset = loaded_datasets[0]
sizes = dataset.sizes
else:
dataset = ConcatDataset(loaded_datasets)
sizes = np.concatenate([ds.sizes for ds in loaded_datasets])
add_eos_for_other_targets = self.args.sample_break_mode is not None and self.args.sample_break_mode != 'none'
self.datasets[split] = MonolingualDataset(
dataset,
sizes,
self.dictionary,
self.output_dictionary,
add_eos_for_other_targets=add_eos_for_other_targets,
shuffle=True,
targets=self.targets,
)
def load_langpair_dataset(
data_path, split,
src, src_dict,
tgt, tgt_dict, ter,
xml_dico, xml_params,
combine, dataset_impl, upsample_primary,
left_pad_source, left_pad_target, max_source_positions, max_target_positions, shuffle=True,
task='translation_qe'
):
def split_exists(split, src, tgt, lang, data_path):
# filename = os.path.join(data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
# return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
filename = os.path.join(data_path, split + '.')
print(filename + src)
return os.path.exists(filename + src)
src_datasets = []
tgt_datasets = []
ter_datasets = []
xml_datasets = []
word_tag_datasets = []
gap_tag_datasets = []
bpe_tag_datasets = []
xml_bpe_tag_datasets = []
src_word_tag_datasets = []
src_bpe_tag_datasets = []
xml_src_bpe_tag_datasets = []
# tgt_datasets_xml = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
filename = os.path.join(data_path, split + '.')
print(filename + src)
# infer langcode
if split_exists(split_k, src, tgt, src, data_path):
# prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, src, tgt))
prefix = os.path.join(data_path, split_k + '.')
prefix_xml = os.path.join(data_path, 'xml_data/' + split_k + '.')
elif split_exists(split_k, tgt, src, src, data_path):
# prefix = os.path.join(data_path, '{}.{}-{}.'.format(split_k, tgt, src))
prefix = os.path.join(data_path, split_k + '.')
prefix_xml = os.path.join(data_path, 'xml_data/' + split_k + '.')
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(split, data_path))
src_datasets.append(
data_utils.load_indexed_dataset(prefix + src, src_dict, dataset_impl)
)
tgt_datasets.append(
data_utils.load_indexed_dataset(prefix + tgt, tgt_dict, dataset_impl)
)
ter_datasets.append(
torch.from_numpy(np.loadtxt(prefix + ter))
)
xml_datasets.append(
data_utils.load_indexed_dataset(prefix_xml + src, xml_dico, dataset_impl, path_xml=prefix_xml + tgt)
)
if task == 'translation_qe_word':
word_tag_datasets.append(
data_utils.load_word_qe_tags(prefix + 'word_tags')
)
gap_tag_datasets.append(
data_utils.load_word_qe_tags(prefix + 'gap_tags')
)
src_word_tag_datasets.append(
data_utils.load_word_qe_tags(prefix + 'src_word_tags')
)
bpe_tag_datasets.append(
data_utils.load_bpe_tags(prefix + 'bpe')
)
src_bpe_tag_datasets.append(
data_utils.load_bpe_tags(prefix + 'src_bpe')
)
xml_bpe_tag_datasets.append(
data_utils.load_bpe_tags(prefix_xml + 'bpe')
)
xml_src_bpe_tag_datasets.append(
data_utils.load_bpe_tags(prefix_xml + 'src_bpe')
)
# tgt_datasets_xml.append(
# data_utils.load_indexed_dataset(prefix_xml + tgt, xml_dico, dataset_impl)
# )
print('| {} {} {}-{} {} examples'.format(data_path, split_k, src, tgt, len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
assert len(src_datasets) == len(ter_datasets)
if len(src_datasets) == 1:
if task == 'translation_qe_word':
src_dataset, tgt_dataset, ter_dataset, xml_dataset, \
word_tag_dataset, gap_tag_dataset, bpe_tag_dataset, xml_bpe_tag_dataset, \
src_word_tag_dataset, src_bpe_tag_dataset, xml_src_bpe_tag_dataset \
= src_datasets[0], tgt_datasets[0], ter_datasets[0], xml_datasets[0], \
word_tag_datasets[0], gap_tag_datasets[0], bpe_tag_datasets[0], xml_bpe_tag_datasets[0], \
src_word_tag_datasets[0], src_bpe_tag_datasets[0], xml_src_bpe_tag_datasets[0]
else:
src_dataset, tgt_dataset, ter_dataset, xml_dataset = src_datasets[0], tgt_datasets[0], ter_datasets[0], xml_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
ter_dataset = ConcatDataset(ter_datasets, sample_ratios)
xml_dataset = ConcatDataset(xml_datasets, sample_ratios)
if task == 'translation_qe_word':
return LanguagePairWordDataset(
src_dataset, src_dataset.sizes, src_dict,
tgt_dataset, tgt_dataset.sizes, tgt_dict,
ter_dataset, xml_dataset, xml_dico, xml_params, xml_pad_indx=xml_params.pad_index,
word_tag=word_tag_dataset, gap_tag=gap_tag_dataset,
bpe_tag=bpe_tag_dataset, xml_bpe_tag=xml_bpe_tag_dataset,
src_word_tag=src_word_tag_dataset, src_bpe_tag=src_bpe_tag_dataset,
xml_src_bpe_tag=xml_src_bpe_tag_dataset,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
shuffle=shuffle
)
else:
return LanguagePairDataset(
src_dataset, src_dataset.sizes, src_dict,
tgt_dataset, tgt_dataset.sizes, tgt_dict,
ter_dataset, xml_dataset, xml_dico, xml_params, xml_pad_indx=xml_params.pad_index,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
shuffle=shuffle
)
def load_dataset(self, split, combine=False):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(
data_path, '{}.{}-{}.{}'.format(split, src, tgt, lang))
if self.args.raw_text and IndexedRawTextDataset.exists(filename):
return True
elif not self.args.raw_text and IndexedDataset.exists(filename):
return True
return False
def indexed_dataset(path, dictionary):
if self.args.raw_text and IndexedRawTextDataset.exists(path):
return IndexedRawTextDataset(path, dictionary)
elif not self.args.raw_text and IndexedInMemoryDataset.exists(
path):
return IndexedDataset(path, fix_lua_indexing=False)
return None
src_datasets = []
tgt_datasets = []
data_paths = self.args.data
for dk, data_path in enumerate(data_paths):
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
src, tgt = self.args.source_lang, self.args.target_lang
if split_exists(split_k, src, tgt, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, tgt, src))
else:
if k > 0 or dk > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(
split, data_path))
src_datasets.append(
indexed_dataset(prefix + src, self.src_dict))
tgt_datasets.append(
indexed_dataset(prefix + tgt, self.tgt_dict))
print('| {} {} {} examples'.format(data_path, split_k,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = self.args.upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
self.datasets[split] = SummerizationLanguagePairDataset(
src_dataset,
src_dataset.sizes,
self.src_dict,
tgt_dataset,
tgt_dataset.sizes,
self.tgt_dict,
left_pad_source=self.args.left_pad_source,
left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
max_target_positions=self.args.max_target_positions,
with_target=(split != 'test'))
def load_dataset(self, split, epoch=0, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
loaded_datasets = []
paths = self.args.data.split(':')
assert len(paths) > 0
data_path = paths[epoch % len(paths)]
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
path = os.path.join(data_path, split_k)
ds = indexed_dataset.make_dataset(path,
impl=self.args.dataset_impl,
fix_lua_indexing=True,
dictionary=self.dictionary)
if ds is None:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(split, data_path))
loaded_datasets.append(
TokenBlockDataset(
ds,
ds.sizes,
self.args.tokens_per_sample,
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
break_mode=self.args.sample_break_mode,
include_targets=True,
))
print('| {} {} {} examples'.format(data_path, split_k,
len(loaded_datasets[-1])))
if not combine:
break
if len(loaded_datasets) == 1:
dataset = loaded_datasets[0]
sizes = dataset.sizes
else:
dataset = ConcatDataset(loaded_datasets)
sizes = np.concatenate([ds.sizes for ds in loaded_datasets])
add_eos_for_other_targets = self.args.sample_break_mode is not None and self.args.sample_break_mode != 'none'
self.datasets[split] = MonolingualDataset(
dataset,
sizes,
self.dictionary,
self.output_dictionary,
add_eos_for_other_targets=add_eos_for_other_targets,
shuffle=True,
targets=self.targets,
add_bos_token=self.args.add_bos_token,
)
def load_dataset(self, split, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
def indexed_dataset(path, dictionary):
return IndexedCachedDataset(path, fix_lua_indexing=True)
src_datasets = []
tgt_datasets = []
src_lngs = []
tgt_lngs = []
dataset_ids = []
dataset_names = []
lng_borders = [0]
data_path = self.args.data[0]
fns = glob.glob(os.path.join(data_path, f'{split}.*'))
lng_pairs = list(set([f.split('.')[1] for f in fns]))
lng_pairs = sorted(lng_pairs)
ds_idx = 0
sources = [s for s in self.args.sources.split(",") if s != '']
targets = [t for t in self.args.targets.split(",") if t != '']
is_distill = self.args.criterion == 'distill_label_smoothed_cross_entropy' and split == 'train'
topk_idxs = []
topk_probs = []
expert_scores = []
for idx, lng_pair in enumerate(lng_pairs):
src, tgt = lng_pair.split('-')
prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split, src, tgt))
def add_dataset(src, tgt):
if (src not in sources
and len(sources) > 0) or (tgt not in targets
and len(targets) > 0):
return 0
if not os.path.exists(prefix + src + ".bin") or \
not os.path.exists(prefix + tgt + ".bin"):
return 0
if is_distill and not os.path.exists(
os.path.join(self.args.data[0],
'{}_{}_topk_idx.idx'.format(src, tgt))):
return 0
src_ds = indexed_dataset(prefix + src, self.src_dict)
src_datasets.append(src_ds)
tgt_ds = indexed_dataset(prefix + tgt, self.tgt_dict)
tgt_datasets.append(tgt_ds)
l = len(src_ds)
if self.args.data_limit != '' \
and src + "-" + tgt == self.args.data_limit.split(':')[0] \
and l > int(self.args.data_limit.split(':')[1]):
l = int(self.args.data_limit.split(':')[1])
src_datasets[-1].size = l
tgt_datasets[-1].size = l
l = len(src_ds)
print("| Add dataset {} -> {}. size:{}".format(src, tgt, l))
lng_borders.append(lng_borders[-1] + l)
dataset_names.append(f"{src}_{tgt}")
for i in range(l):
src_lngs.append(self.lng2id[src])
tgt_lngs.append(self.lng2id[tgt])
dataset_ids.append(ds_idx)
if is_distill:
assert self.args.data_limit == ''
path = os.path.join(self.args.data[0],
'{}_{}_topk_idx'.format(src, tgt))
topk_idxs.append(TeacherOutputDataset(path))
path = os.path.join(self.args.data[0],
'{}_{}_topk_prob'.format(src, tgt))
topk_probs.append(TeacherOutputDataset(path))
expert_bleu = os.path.join(
self.args.data[0],
'expert_bleu_{}_{}.json'.format(src, tgt))
expert_bleu = json.load(open(expert_bleu))
expert_scores.append(expert_bleu[f"bleu_{src}_{tgt}"])
return 1
ds_idx += add_dataset(src, tgt)
ds_idx += add_dataset(tgt, src)
src_dataset = ConcatDataset(src_datasets)
tgt_dataset = ConcatDataset(tgt_datasets)
src_sizes = np.concatenate([ds.sizes for ds in src_datasets])
tgt_sizes = np.concatenate([ds.sizes for ds in tgt_datasets])
topk_idx_dataset = None
topk_probs_dataset = None
if is_distill:
topk_idx_dataset = ConcatDataset(topk_idxs)
topk_probs_dataset = ConcatDataset(topk_probs)
assert len(topk_probs_dataset) == len(tgt_dataset), (
len(topk_probs_dataset), len(tgt_dataset))
assert len(topk_idx_dataset) == len(tgt_dataset)
self.datasets[split] = UniversalDataset(
self.args,
src_dataset,
src_sizes,
self.src_dict,
src_lngs,
tgt_lngs,
tgt_dataset,
tgt_sizes,
self.tgt_dict,
dataset_ids,
lng_borders,
dataset_names,
topk_idxs=topk_idx_dataset,
topk_probs=topk_probs_dataset,
left_pad_source=self.args.left_pad_source,
left_pad_target=self.args.left_pad_target,
max_source_positions=self.args.max_source_positions,
max_target_positions=self.args.max_target_positions,
expert_scores=expert_scores,
is_train=split == 'train')
def load_dataset(self, split, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
paths = utils.split_paths(self.args.data)
assert len(paths) > 0
data_path = paths[(epoch - 1) % len(paths)]
languages = sorted(name for name in os.listdir(data_path)
if os.path.isdir(os.path.join(data_path, name)))
logger.info("Training on {0} languages: {1}".format(
len(languages), languages))
logger.info("Language to id mapping: ",
{lang: id
for id, lang in enumerate(languages)})
mask_whole_words = self._get_whole_word_mask()
lang_datasets = []
for lang_id, language in enumerate(languages):
split_path = os.path.join(data_path, language, split)
dataset = data_utils.load_indexed_dataset(
split_path,
self.source_dictionary,
self.args.dataset_impl,
combine=combine,
)
if dataset is None:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, split_path))
# create continuous blocks of tokens
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
self.args.tokens_per_sample - 1, # one less for <s>
pad=self.source_dictionary.pad(),
eos=self.source_dictionary.eos(),
break_mode=self.args.sample_break_mode,
)
logger.info('loaded {} blocks from: {}'.format(
len(dataset), split_path))
# prepend beginning-of-sentence token (<s>, equiv. to [CLS] in BERT)
dataset = PrependTokenDataset(dataset,
self.source_dictionary.bos())
src_dataset, tgt_dataset = MaskTokensDataset.apply_mask(
dataset,
self.source_dictionary,
pad_idx=self.source_dictionary.pad(),
mask_idx=self.mask_idx,
seed=self.args.seed,
mask_prob=self.args.mask_prob,
leave_unmasked_prob=self.args.leave_unmasked_prob,
random_token_prob=self.args.random_token_prob,
freq_weighted_replacement=self.args.freq_weighted_replacement,
mask_whole_words=mask_whole_words,
)
lang_dataset = NestedDictionaryDataset(
{
'net_input': {
'src_tokens':
PadDataset(
src_dataset,
pad_idx=self.source_dictionary.pad(),
left_pad=False,
),
'src_lengths':
NumelDataset(src_dataset, reduce=False),
},
'target':
PadDataset(
tgt_dataset,
pad_idx=self.source_dictionary.pad(),
left_pad=False,
),
'nsentences':
NumSamplesDataset(),
'ntokens':
NumelDataset(src_dataset, reduce=True),
'lang_id':
RawLabelDataset([lang_id] * src_dataset.sizes.shape[0]),
},
sizes=[src_dataset.sizes],
)
lang_datasets.append(lang_dataset)
dataset_lengths = np.array(
[len(d) for d in lang_datasets],
dtype=float,
)
logger.info('loaded total {} blocks for all languages'.format(
dataset_lengths.sum(), ))
if split == self.args.train_subset:
# For train subset, additionally up or down sample languages.
sample_probs = self._get_sample_prob(dataset_lengths)
logger.info(
"Sample probability by language: ", {
lang: "{0:.4f}".format(sample_probs[id])
for id, lang in enumerate(languages)
})
size_ratio = (sample_probs *
dataset_lengths.sum()) / dataset_lengths
logger.info(
"Up/Down Sampling ratio by language: ", {
lang: "{0:.2f}".format(size_ratio[id])
for id, lang in enumerate(languages)
})
resampled_lang_datasets = [
ResamplingDataset(
lang_datasets[i],
size_ratio=size_ratio[i],
seed=self.args.seed,
epoch=epoch,
replace=size_ratio[i] >= 1.0,
) for i, d in enumerate(lang_datasets)
]
dataset = ConcatDataset(resampled_lang_datasets)
else:
dataset = ConcatDataset(lang_datasets)
lang_splits = [split]
for lang_id, lang_dataset in enumerate(lang_datasets):
split_name = split + '_' + languages[lang_id]
lang_splits.append(split_name)
self.datasets[split_name] = lang_dataset
# [TODO]: This is hacky for now to print validation ppl for each
# language individually. Maybe need task API changes to allow it
# in more generic ways.
if split in self.args.valid_subset:
self.args.valid_subset = self.args.valid_subset.replace(
split, ','.join(lang_splits))
with data_utils.numpy_seed(self.args.seed + epoch):
shuffle = np.random.permutation(len(dataset))
self.datasets[split] = SortDataset(
dataset,
sort_order=[
shuffle,
dataset.sizes,
],
)
def load_dataset(self, split, epoch=1, combine=False):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
loaded_datasets = []
paths = utils.split_paths(self.args.data)
assert len(paths) > 0
data_path = paths[(epoch - 1) % len(paths)]
logger.info("data_path", data_path)
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
path = os.path.join(data_path, split_k)
ds = indexed_dataset.make_dataset(
path,
impl=self.args.dataset_impl,
fix_lua_indexing=True,
dictionary=self.dictionary,
)
if ds is None:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(split, data_path))
with data_utils.numpy_seed(self.seed + k):
loaded_datasets.append(
BlockPairDataset(
ds,
self.dictionary,
ds.sizes,
self.args.tokens_per_sample,
break_mode=self.args.break_mode,
doc_break_size=1,
))
logger.info('{} {} {} examples都是非常重要的例子'.format(
data_path, split_k, len(loaded_datasets[-1])))
if not combine:
break
if len(loaded_datasets) == 1:
dataset = loaded_datasets[0]
sizes = dataset.sizes
else:
dataset = ConcatDataset(loaded_datasets)
sizes = np.concatenate([ds.sizes for ds in loaded_datasets])
self.datasets[split] = MaskedLMDataset(
dataset=dataset,
sizes=sizes,
vocab=self.dictionary,
pad_idx=self.dictionary.pad(),
mask_idx=self.dictionary.mask(),
classif_token_idx=self.dictionary.cls(),
sep_token_idx=self.dictionary.sep(),
shuffle=self.args.shuffle_dataset,
seed=self.seed,
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
):
def split_exists(split, src, tgt, lang, data_path):
filename = os.path.join(data_path,
'{}.{}-{}.{}'.format(split, src, tgt, lang))
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
if split_exists(split_k, src, tgt, src, data_path):
src_prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, tgt, src, src, data_path):
src_prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split_k, tgt, src))
elif split_exists(split_k, src, tgt.split("_")[0], src, data_path):
src_prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, src,
tgt.split("_")[0]))
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, data_path))
src_datasets.append(
data_utils.load_indexed_dataset(src_prefix + src, src_dict,
dataset_impl))
if split_exists(split_k, src, tgt, tgt, data_path):
tgt_prefix = os.path.join(data_path,
'{}.{}-{}.'.format(split_k, src, tgt))
elif split_exists(split_k, src, tgt.split("_")[0], tgt, data_path):
tgt_prefix = os.path.join(
data_path, '{}.{}-{}.'.format(split_k, src,
tgt.split("_")[0]))
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, data_path))
tgt_datasets.append(
data_utils.load_indexed_dataset(tgt_prefix + tgt, tgt_dict,
dataset_impl))
print('| {} {} {}-{} {} examples'.format(data_path, split_k, src, tgt,
len(src_datasets[-1])))
if not combine:
break
assert len(src_datasets) == len(tgt_datasets)
if len(src_datasets) == 1:
src_dataset, tgt_dataset = src_datasets[0], tgt_datasets[0]
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
return LanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset.sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
)